Mr. Glenn A. Howe Profile

Glenn A. Howe

Graduate Research Assistant at Univ of Massachusetts Lowell

SPIE Involvement:

Author

Publications (10)

Proceedings Article | 9 September 2019 Paper

The low-order wavefront control system for the PICTURE-C mission: deformable mirror anti-aliasing through temporal dithering

Kuravi Hewawasam, Christopher Mendillo, Glenn Howe, Jason Martel, Susanna Finn, Timothy Cook, Julien Charton, Pierre Mahiou, Supriya Chakrabarti

Proceedings Volume 11117, 111171Q (2019) https://doi.org/10.1117/12.2529706

KEYWORDS: Actuators, Wavefronts, Wavefront sensors, Interfaces, Control systems, Mirrors, Clocks, Deformable mirrors, Analog electronics, Coronagraphy

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Proceedings Article | 9 September 2019 Paper

Decoupling the image-plane and low-order wavefront sensors for the PICTURE-C coronagraph

Christopher Mendillo, Kuravi Hewawasam, Glenn Howe, Jason Martel, Timothy Cook, Supriya Chakrabarti

Proceedings Volume 11117, 111171R (2019) https://doi.org/10.1117/12.2529724

KEYWORDS: Calibration, Coronagraphy, Wavefront sensors, Wavefronts, Sensors, Control systems, Deformable mirrors, Cameras, Exoplanets, CCD cameras

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Proceedings Article | 9 September 2019 Presentation + Paper

The PICTURE-C exoplanetary direct imaging balloon mission: first flight preparation

Christopher Mendillo, Kuravi Hewawasam, Glenn Howe, Jason Martel, Timothy Cook, Supriya Chakrabarti

Proceedings Volume 11117, 1111707 (2019) https://doi.org/10.1117/12.2529710

KEYWORDS: Mirrors, Coronagraphy, Telescopes, Wavefronts, Sensors, Calibration, Wavefront sensors, Cameras, Stars, Control systems

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SPIE Journal Paper | 14 May 2019

Polarization aberration analysis for the PICTURE-C exoplanetary coronagraph

Christopher Mendillo, Glenn Howe, Kuravi Hewawasam, Jason Martel, Timothy Cook, Supriya Chakrabarti

JATIS, Vol. 5, Issue 02, 025003, (May 2019) https://doi.org/10.1117/12.10.1117/1.JATIS.5.2.025003

KEYWORDS: Polarization, Coronagraphy, Coating, Mirrors, Ray tracing, Geometrical optics, Wavefronts, Telescopes, Reflection, Reflectivity

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Proceedings Article | 1 September 2017 Paper

The low-order wavefront control system for the PICTURE-C mission: high-speed image acquisition and processing

Kuravi Hewawasam, Christopher Mendillo, Glenn Howe, Jason Martel, Susanna Finn, Timothy Cook, Supriya Chakrabarti

Proceedings Volume 10400, 1040020 (2017) https://doi.org/10.1117/12.2274125

KEYWORDS: Control systems, Imaging systems, Wavefronts, Image acquisition, Image processing, Wavefront sensors, Operating systems, Computing systems, Exoplanets

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Proceedings Article | 1 September 2017 Paper

The low-order wavefront control system for the PICTURE-C mission: preliminary testbed results from the Shack-Hartmann sensor

Glenn Howe, Christopher Mendillo, Kuravi Hewawasam, Jason Martel, Susanna Finn, Timothy Cook, Supriya Chakrabarti

Proceedings Volume 10400, 104001Z (2017) https://doi.org/10.1117/12.2274122

KEYWORDS: Control systems, Sensors, Imaging systems, Wavefronts, Wavefront sensors, Stars, Telescopes, Mirrors, Deformable mirrors

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Proceedings Article | 1 September 2017 Presentation + Paper

Optical tolerances for the PICTURE-C mission: error budget for electric field conjugation, beam walk, surface scatter, and polarization aberration

Christopher Mendillo, Glenn Howe, Kuravi Hewawasam, Jason Martel, Susanna Finn, Timothy Cook, Supriya Chakrabarti

Proceedings Volume 10400, 1040010 (2017) https://doi.org/10.1117/12.2274105

KEYWORDS: Polarization, Tolerancing, Scattering, Imaging systems, Adaptive optics, Exoplanets, Optical fabrication

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SPIE Journal Paper | 17 December 2015

Capabilities and performance of dual-wavelength Echidna^® lidar

Glenn Howe, Kuravi Hewawasam, Ewan Douglas, Jason Martel, Zhan Li, Alan Strahler, Crystal Schaaf, Timothy Cook, Supriya Chakrabarti

JARS, Vol. 9, Issue 01, 095979, (December 2015) https://doi.org/10.1117/12.10.1117/1.JRS.9.095979

KEYWORDS: LIDAR, Spatial resolution, Signal to noise ratio, Reflectivity, Calibration, Vegetation, Pulsed laser operation, Scattering, Laser scanners, Short wave infrared radiation

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Proceedings Article | 16 September 2015 Paper

End-to-end simulation of high-contrast imaging systems: methods and results for the PICTURE mission family

Ewan Douglas, Kuravi Hewawasam, Christopher Mendillo, Kerri Cahoy, Timothy Cook, Susanna Finn, Glenn Howe, Marc Kuchner, Nikole Lewis, Anne Marinan, Dimitri Mawet, Supriya Chakrabarti

Proceedings Volume 9605, 96051A (2015) https://doi.org/10.1117/12.2187262

KEYWORDS: Wavefronts, Coronagraphy, Rockets, Telescopes, Device simulation, Wave propagation, Space telescopes, Sensors, Point spread functions, Mirrors

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Proceedings Article | 16 September 2015 Paper

The low-order wavefront sensor for the PICTURE-C mission

Christopher Mendillo, Joshua Brown, Jason Martel, Glenn Howe, Kuravi Hewawasam, Susanna Finn, Timothy Cook, Supriya Chakrabarti, Ewan Douglas, Dimitri Mawet, Olivier Guyon, Garima Singh, Julien Lozi, Kerri Cahoy, Anne Marinan

Proceedings Volume 9605, 960519 (2015) https://doi.org/10.1117/12.2188238

KEYWORDS: Sensors, Wavefront sensors, Coronagraphy, Wavefronts, Control systems, Telescopes, Data modeling, Mirrors, Visible radiation, Stars

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Showing 5 of 10 publications

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